Kinetically controlled synthesis of Cu nanowires with tunable diameters and their applications in transparent electrodes†,Journal of Materials Chemistry C

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Kinetically controlled synthesis of Cu nanowires with tunable diameters and their applications in transparent electrodes†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-12-21 00:00:00 , DOI: 10.1039/c7tc05038k
Xiao Wang _{1,

2,

3,

4} , Ranran Wang _{1,

2,

3,

4} , Liangjing Shi _{1,

2,

3,

4} , Jing Sun _{1,

2,

3,

4}

Affiliation

One-dimensional metallic nanostructures have attracted ever increasing attention in recent years due to their potential applications in transparent electrodes, catalysts, surface enhanced resonance scattering (SERS) based sensors and electric heating elements. The controllable synthesis of high quality metal nanowires is of great importance for the optimization of devices based on metal nanowires. However, due to the intrinsic complexity of one-pot organic reaction systems, the reaction mechanism is still yet to be understood, which severely holds back the efforts towards the controllable synthesis of high quality nanowires. Herein, a two-step method for the synthesis of high-quality Cu nanowires with tunable diameters is proposed. The mechanism of a typical synthesis procedure is discussed through analyzing the apparent phenomena and intermediate products. Kinetically controlled synthesis is achieved by adjusting the species and concentration of halide ions to synthesize high-purity Cu nanowires with tunable diameters ranging from 20 to 90 nm. Electrodes with superior conductivity (FoM ∼ 140, 11 Ω sq⁻¹@80%) are constructed and characterized on the basis of the Cu nanowires synthesized through this method. Red shifts in the LSPR peaks of Cu nanowire dispersions and increments in the haze factors of nanowire electrodes are observed as the average diameter of Cu nanowires increases. The method is also successfully expanded to the synthesis of Ag nanowires with tunable diameters.

中文翻译：

动力学控制的直径可变的铜纳米线的合成及其在透明电极中的应用†

一维金属纳米结构由于其在透明电极，催化剂，基于表面增强共振散射（SERS）的传感器和电加热元件中的潜在应用，近年来受到越来越多的关注。高质量金属纳米线的可控制合成对于优化基于金属纳米线的器件非常重要。然而，由于一锅法有机反应系统的内在复杂性，反应机理仍待了解，这严重阻碍了可控合成高质量纳米线的努力。在此，提出了一种用于合成具有可调直径的高质量Cu纳米线的两步法。通过分析表观现象和中间产物，讨论了典型合成过程的机理。通过调节卤离子的种类和浓度以合成直径可调范围为20至90 nm的高纯度Cu纳米线，可以实现动力学控制的合成。导电性极佳的电极（FoM〜140，11Ωsq^-1 @ 80％）是基于通过此方法合成的Cu纳米线构造和表征的。随着铜纳米线平均直径的增加，观察到铜纳米线分散液的LSPR峰出现红移，纳米线电极的雾度因数增加。该方法也成功地扩展到具有可调直径的Ag纳米线的合成。

更新日期：2017-12-21

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